Earlier quoted context omitted.
That this is someone's fault and they can be punished is, I think, the reason people want it to be true. Rather than the world is a terrifying place that sometimes kills millions.
It sure seemed like a lot of people wanted the other theory to be true also though didn't it? I think the biggest driver for the lab leak arguments is backlash. Both theories would presumably have people that are culpable due to violating safety rules designed to prevent exactly what happened. But I suppose a lab screwing up is more embarrassing to China than a hick selling wild animals or whatever illegally.
But of course, there is considerable bias to view traditional practices like wet markets more favorably than modern practices like virology labs. So, in reality, the virus leaking from a virology lab would be found far more condemnable than the virus being contracted randomly at a wet market.